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Modified Monocytes/Macrophage Expressing Chimeric Antigen Receptors and Uses Thereof

a technology of chimeric antigen receptors and monocytes, which is applied in the direction of immunological disorders, drug compositions, peptides, etc., can solve the problems of limited car t cell efficacy in solid tumors (as well as in certain lymphoid tumors) and achieve the effect of stimulating an immune respons

Active Publication Date: 2018-08-30
THE TRUSTEES OF THE UNIV OF PENNSYLVANIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to a modified cell with targeted effector activity that can be used for the treatment of immune responses and tumors or cancers. The modified cell has a chimeric antigen receptor (CAR) that targets specific antigens on target cells. The CAR can be introduced into monocytes, macrophages, or dendritic cells, which then express the CAR and possess targeted effector activity. The modified cell can also be genetically modified to express the CAR. The invention also includes a pharmaceutical composition comprising the modified cell and a method of treating diseases or conditions associated with tumors or cancers by administering the modified cell to a subject. The technical effects of the invention include improved targeted effector activity and enhanced immune response against tumors or cancers.

Problems solved by technology

Despite the high response rates demonstrated in hematopoietic malignancies, CAR T cell efficacy in solid tumors (as well as in certain lymphoid tumors) may be limited.

Method used

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  • Modified Monocytes/Macrophage Expressing Chimeric Antigen Receptors and Uses Thereof
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  • Modified Monocytes/Macrophage Expressing Chimeric Antigen Receptors and Uses Thereof

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experimental examples

[0313]The invention is further described in detail by reference to the following experimental examples. These examples are provided for purposes of illustration only, and are not intended to be limiting unless otherwise specified. Thus, the invention should in no way be construed as being limited to the following examples, but rather, should be construed to encompass any and all variations which become evident as a result of the teaching provided herein.

[0314]Without further description, it is believed that one of ordinary skill in the art can, using the preceding description and the following illustrative examples, make and utilize the compounds of the present invention and practice the claimed methods. The following working examples therefore, specifically point out the preferred embodiments of the present invention, and are not to be construed as limiting in any way the remainder of the disclosure.

[0315]The materials and methods employed in these experiments are now described.

[03...

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Abstract

The present invention includes methods and compositions for treating cancer, whether a solid tumor or a hematologic malignancy. By expressing a chimeric antigen receptor in a monocyte, macrophage or dendritic cell, the modified cell is recruited to the tumor microenvironment where it acts as a potent immune effector by infiltrating the tumor and killing the target cells. One aspect includes a modified cell and pharmaceutical compositions comprising the modified cell for adoptive cell therapy and treating a disease or condition associated with immunosuppression.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application is a 35 U.S.C. § 371 national phase application from, and claims priority to, International Application No. PCT / US2016 / 044440, filed Jul. 28, 2016, and published under PCT Article 21(2) in English, which is entitled to priority under 35 U.S.C. § 119(e) to U.S. Provisional Application No. 62 / 197,675, filed Jul. 28, 2015, all of which are incorporated herein by reference in their entireties.BACKGROUND OF THE INVENTION[0002]Cancer immunotherapy has demonstrated exciting clinical results in the setting of numerous solid tumors and hematologic malignancies. The endogenous immune system is typically non-reactive to malignant cells, or can be actively immunosuppressive with respect to the body's reaction to the presence of malignant cells. One way to enhance treatment of tumors is to force tumor recognition by the immune system through genetic engineering of leukocytes. T cells can be engineered to express a synthetic immu...

Claims

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Application Information

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IPC IPC(8): C07K14/705C07K16/28C07K14/725C07K14/735C07K16/32A61K35/15A61P35/00
CPCC07K14/70517C07K16/2803C07K14/7051C07K14/7056C07K14/70535C07K16/32A61K35/15A61P35/00C07K2317/622C07K2319/02C07K2319/03C07K2319/74A61K38/00C07K2317/73A61K35/14C07K16/30C07K19/00C07K2319/00C12N5/0645C12N2510/00A61K2039/505A61K2039/892A61P37/02A61K39/464406A61K39/464468A61K39/4631A61K39/464412A61K39/4614A61K2039/5156A61K39/001112A61K39/001106A61K39/001168A61K2039/5158A61K2039/5154
Inventor GILL, SAARKLICHINSKY, MICHAELJUNE, CARL H.
Owner THE TRUSTEES OF THE UNIV OF PENNSYLVANIA
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